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std::lock_guard<Mutex>:: ~lock_guard

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std::lock_guard
Member functions
lock_guard::~lock_guard
~lock_guard ( ) ;
(自 C++11 起)

释放所拥有互斥锁的所有权。

等效于调用 m. unlock ( ) ，其中 m 是传递给 lock_guard 构造函数的互斥量。